Home / 1,117.30-1,548.40-1,101.64

Finding the Fourth Proportional to 1,117.30, 1,548.40 and 1,101.64

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Solution

The fourth proportional to 1,117.30, 1,548.40 and 1,101.64 is: 1,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.30 : 1,548.40 = 1,101.64 : x
  2. Step 2: Convert to fraction form
    1,117.30/1,548.40 = 1,101.64/x
  3. Step 3: Cross multiply
    1,117.30x = 1,548.40 × 1,101.64
  4. Step 4: Simplify right side
    1,117.30x = 1,705,779.38
  5. Step 5: Solve for x
    x = 1,705,779.38/1,117.30
  6. Step 6: Final answer
    x = 1,526.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.